import axios from 'axios'
import { notifyError, confirmInstance } from '@/utils/message'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 60000 * 5 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data
    // if the custom code is not 20000, it is judged as an error.
    if (res.code === 200 || res.code === 300) {
      return res
    } else if (res.code === 401) {
      // to re-login
      confirmInstance('凭证不可用，请重新登录！', 'warning').then(() => {
        store.dispatch('user/resetToken').then(() => {
          location.reload()
        })
      })
    } else if (res.code === 500) {
      notifyError(res.message || '未知错误！')
      return Promise.reject(new Error(res.message || '未知错误！'))
    }
  },
  error => {
    console.error(error) // for debug
    notifyError(error.message || '未知错误！')
    return Promise.reject(error)
  }
)

export default service
